/**
 * Ruz Proje - Main Stylesheet
 * Mobile-First Responsive Design
 */

/* CSS Reset for Mobile-First */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Mobile-First Design System */
:root {
    --ruz-dark: #0A0E27;
    --ruz-primary: #06B6D4;
    --ruz-secondary: #0891B2;
    --ruz-accent: #10B981;
    --ruz-gold: #F59E0B;
    --ruz-purple: #8B5CF6;
    --ruz-text: #F9FAFB;
    --ruz-text-muted: #9CA3AF;
    --ruz-border: rgba(255, 255, 255, 0.1);
    --ruz-gradient: linear-gradient(135deg, #06B6D4 0%, #0891B2 100%);
    --ruz-card-bg: rgba(255, 255, 255, 0.05);
    
    /* Mobile-first spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-xxl: 4rem;
    
    /* Responsive container widths */
    --container-sm: 100%;
    --container-md: 768px;
    --container-lg: 1024px;
    --container-xl: 1400px;
}

/* Base HTML and Body - Mobile First */
html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    -ms-text-size-adjust: 100%;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--ruz-dark);
    color: var(--ruz-text);
    line-height: 1.6;
    overflow-x: hidden;
    font-size: 16px;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Skip Link for Accessibility */
.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: var(--ruz-primary);
    color: white;
    padding: 8px;
    text-decoration: none;
    border-radius: 4px;
    z-index: 10000;
}
.skip-link:focus {
    top: 6px;
}

/* Language Selector - Mobile Optimized */
.language-selector {
    position: fixed;
    top: 10px;
    right: 10px;
    z-index: 1001;
    display: flex;
    gap: 0.25rem;
}

.lang-btn {
    background: rgba(6, 182, 212, 0.1);
    border: 1px solid rgba(6, 182, 212, 0.3);
    color: var(--ruz-primary);
    padding: 0.5rem 0.75rem;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.8125rem;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    min-width: 36px;
    text-align: center;
}

.lang-btn:hover, .lang-btn.active, .lang-btn:focus {
    background: rgba(6, 182, 212, 0.2);
    transform: translateY(-2px);
    outline: 2px solid var(--ruz-primary);
    outline-offset: 2px;
}

/* Mobile Navigation */
nav {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(10, 14, 39, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--ruz-border);
    padding: 0;
}

.nav-container {
    max-width: var(--container-xl);
    margin: 0 auto;
    padding: var(--space-sm);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-weight: 900;
    font-size: 1.25rem;
    background: var(--ruz-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Mobile Menu Toggle */
.nav-toggle {
    display: block;
    background: none;
    border: none;
    color: var(--ruz-text);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 4px;
    transition: background 0.3s ease;
}

.nav-toggle:hover, .nav-toggle:focus {
    background: rgba(255, 255, 255, 0.1);
    outline: 2px solid var(--ruz-primary);
    outline-offset: 2px;
}

.nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(10, 14, 39, 0.98);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--ruz-border);
    padding: var(--space-sm);
    flex-direction: column;
    gap: var(--space-sm);
    list-style: none;
}

.nav-links.active {
    display: flex;
}

.nav-links a {
    color: var(--ruz-text-muted);
    text-decoration: none;
    font-weight: 500;
    padding: var(--space-sm);
    border-radius: 8px;
    transition: all 0.3s ease;
    text-align: center;
}

.nav-links a:hover, .nav-links a:focus {
    color: var(--ruz-primary);
    background: rgba(6, 182, 212, 0.1);
    outline: 2px solid var(--ruz-primary);
    outline-offset: 2px;
}

/* Image Slider - Mobile First */
.hero-slider {
    margin-top: 60px;
    position: relative;
    width: 100%;
    height: 50vh;
    min-height: 400px;
    overflow: hidden;
    border-radius: 0 0 16px 16px;
}

.slider-container {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.slide {
    min-width: 100%;
    height: 100%;
    position: relative;
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    justify-content: center;
}

.slide::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(10, 14, 39, 0.7) 0%, rgba(6, 182, 212, 0.3) 100%);
}

.slide-content {
    position: relative;
    z-index: 2;
    text-align: center;
    padding: var(--space-md);
    max-width: 90%;
}

.slide-title {
    font-size: clamp(1.75rem, 6vw, 3rem);
    font-weight: 900;
    background: var(--ruz-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--space-sm);
    line-height: 1.1;
}

.slide-subtitle {
    font-size: clamp(1rem, 3.5vw, 1.25rem);
    color: var(--ruz-text);
    margin-bottom: var(--space-lg);
    opacity: 0.9;
    line-height: 1.4;
}

.slide-cta {
    display: inline-block;
    background: var(--ruz-gradient);
    color: white;
    padding: 0.875rem 2rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9375rem;
    transition: all 0.3s ease;
    box-shadow: 0 6px 20px rgba(6, 182, 212, 0.3);
}

.slide-cta:hover, .slide-cta:focus {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(6, 182, 212, 0.4);
    outline: 2px solid white;
    outline-offset: 2px;
}

/* Mobile Slider Navigation */
.slider-nav {
    position: absolute;
    bottom: var(--space-sm);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 0.75rem;
    z-index: 3;
}

.nav-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    cursor: pointer;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.nav-dot.active {
    background: var(--ruz-primary);
    transform: scale(1.2);
}

.nav-dot:hover, .nav-dot:focus {
    border-color: var(--ruz-primary);
    outline: 2px solid var(--ruz-primary);
    outline-offset: 2px;
}

/* Hide arrows on mobile */
.slider-arrows {
    display: none;
}

/* Hero Section - Mobile First */
.hero {
    padding: var(--space-lg) var(--space-sm);
    text-align: center;
    background: radial-gradient(ellipse at center, rgba(6, 182, 212, 0.15) 0%, transparent 70%);
}

.hero-container {
    max-width: var(--container-xl);
    margin: 0 auto;
}

.hero-badge {
    display: inline-block;
    background: rgba(6, 182, 212, 0.1);
    border: 1px solid rgba(6, 182, 212, 0.3);
    color: var(--ruz-primary);
    padding: 0.5rem 1rem;
    border-radius: 2rem;
    font-size: 0.8125rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    margin-bottom: var(--space-lg);
    text-align: center;
}

.stats-container {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-sm);
    max-width: 600px;
    margin: 0 auto;
}

.stat-card {
    background: var(--ruz-card-bg);
    border: 1px solid var(--ruz-border);
    border-radius: 12px;
    padding: var(--space-md);
    text-align: center;
    transition: all 0.3s ease;
}

.stat-card:hover, .stat-card:focus-within {
    transform: translateY(-2px);
    border-color: rgba(6, 182, 212, 0.3);
}

.stat-number {
    font-size: clamp(1.75rem, 5vw, 2.5rem);
    font-weight: 900;
    background: var(--ruz-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    color: var(--ruz-text-muted);
    font-size: 0.875rem;
    margin-top: 0.5rem;
}

/* Main Content - Mobile First */
.main-content {
    max-width: var(--container-xl);
    margin: 0 auto;
    padding: 0 var(--space-sm);
}

/* Sections - Mobile First */
section {
    padding: var(--space-xl) 0;
}

.section-title {
    font-size: clamp(1.875rem, 5vw, 2.5rem);
    font-weight: 800;
    color: var(--ruz-text);
    margin-bottom: var(--space-lg);
    position: relative;
    display: inline-block;
    width: 100%;
    text-align: center;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -0.5rem;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--ruz-gradient);
    border-radius: 2px;
}

/* About Section */
.about-section {
    text-align: center;
}

.about-text {
    font-size: 1.0625rem;
    color: var(--ruz-text-muted);
    max-width: 700px;
    margin: 0 auto var(--space-lg);
    line-height: 1.7;
}

/* Projects Grid - Mobile First */
.projects-section {
    padding: var(--space-xl) 0;
}

.projects-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-lg);
    margin-top: var(--space-xl);
}

.project-card {
    background: var(--ruz-card-bg);
    border: 1px solid var(--ruz-border);
    border-radius: 16px;
    overflow: hidden;
    transition: all 0.3s ease;
}

.project-card:hover, .project-card:focus-within {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(6, 182, 212, 0.15);
    border-color: rgba(6, 182, 212, 0.3);
}

.project-image {
    width: 100%;
    height: 200px;
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.project-status {
    position: absolute;
    top: var(--space-sm);
    right: var(--space-sm);
    background: rgba(16, 185, 129, 0.9);
    color: white;
    padding: 0.5rem var(--space-sm);
    border-radius: 2rem;
    font-size: 0.8125rem;
    font-weight: 600;
}

.project-status.upcoming {
    background: rgba(245, 158, 11, 0.9);
}

.project-content {
    padding: var(--space-lg);
}

.project-title {
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--ruz-primary);
    margin-bottom: var(--space-sm);
}

.project-description {
    color: var(--ruz-text-muted);
    line-height: 1.6;
    margin-bottom: var(--space-md);
}

.project-features {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    padding-top: var(--space-md);
    border-top: 1px solid var(--ruz-border);
}

.project-feature {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.feature-icon {
    color: var(--ruz-primary);
    font-size: 1.125rem;
}

.feature-text {
    color: var(--ruz-text-muted);
    font-size: 0.875rem;
}

/* Technology Section */
.tech-section {
    background: radial-gradient(ellipse at center, rgba(139, 92, 246, 0.05) 0%, transparent 70%);
}

.tech-card {
    background: var(--ruz-card-bg);
    border: 1px solid rgba(139, 92, 246, 0.3);
    border-radius: 16px;
    padding: var(--space-lg);
    text-align: center;
    max-width: 800px;
    margin: var(--space-lg) auto;
}

.tech-logo {
    font-size: clamp(1.5rem, 4vw, 2rem);
    font-weight: 900;
    background: linear-gradient(135deg, #8B5CF6 0%, #06B6D4 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--space-md);
}

.tech-description {
    color: var(--ruz-text-muted);
    line-height: 1.7;
    margin-bottom: var(--space-lg);
}

.tech-links {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    align-items: center;
}

.tech-link {
    display: inline-block;
    background: rgba(139, 92, 246, 0.1);
    border: 1px solid rgba(139, 92, 246, 0.3);
    color: var(--ruz-purple);
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    min-width: 200px;
    text-align: center;
}

.tech-link:hover, .tech-link:focus {
    background: rgba(139, 92, 246, 0.2);
    transform: translateY(-2px);
    outline: 2px solid var(--ruz-purple);
    outline-offset: 2px;
}

/* Leadership Section - Mobile First */
.leadership-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-lg);
    margin-top: var(--space-xl);
}

.leader-card {
    background: var(--ruz-card-bg);
    border: 1px solid var(--ruz-border);
    border-radius: 16px;
    padding: var(--space-lg);
    text-align: center;
    transition: all 0.3s ease;
}

.leader-card:hover, .leader-card:focus-within {
    transform: translateY(-2px);
    border-color: rgba(6, 182, 212, 0.3);
}

.leader-avatar {
    width: 100px;
    height: 100px;
    background: var(--ruz-gradient);
    border-radius: 50%;
    margin: 0 auto var(--space-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    font-weight: 700;
    color: white;
}

.leader-name {
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--ruz-text);
    margin-bottom: 0.5rem;
}

.leader-title {
    color: var(--ruz-primary);
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.leader-bio {
    color: var(--ruz-text-muted);
    line-height: 1.6;
}

/* Contact Section */
.contact-section {
    background: radial-gradient(ellipse at center, rgba(6, 182, 212, 0.05) 0%, transparent 70%);
    text-align: center;
}

.contact-card {
    background: var(--ruz-card-bg);
    border: 1px solid var(--ruz-border);
    border-radius: 16px;
    padding: var(--space-lg);
    max-width: 600px;
    margin: var(--space-lg) auto;
}

.contact-info {
    color: var(--ruz-text-muted);
    line-height: 1.8;
    margin-bottom: var(--space-lg);
}

.contact-info a {
    color: var(--ruz-primary);
    text-decoration: none;
}

.contact-info a:hover, .contact-info a:focus {
    text-decoration: underline;
    outline: 2px solid var(--ruz-primary);
    outline-offset: 2px;
}

.cta-button {
    display: inline-block;
    background: var(--ruz-gradient);
    color: white;
    padding: 1rem 2rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.cta-button:hover, .cta-button:focus {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(6, 182, 212, 0.3);
    outline: 2px solid white;
    outline-offset: 2px;
}

/* Contact Form */
.contact-form {
    text-align: left;
    margin-top: var(--space-lg);
}

.form-group {
    margin-bottom: var(--space-md);
}

.form-label {
    display: block;
    color: var(--ruz-text);
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: 0.75rem 1rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--ruz-border);
    border-radius: 8px;
    color: var(--ruz-text);
    font-family: inherit;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    border-color: var(--ruz-primary);
    background: rgba(255, 255, 255, 0.08);
}

.form-textarea {
    min-height: 120px;
    resize: vertical;
}

.form-select {
    cursor: pointer;
}

.form-select option {
    background: var(--ruz-dark);
    color: var(--ruz-text);
}

.form-submit {
    width: 100%;
    padding: 1rem;
    font-size: 1rem;
}

.form-message {
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: var(--space-md);
    display: none;
}

.form-message.success {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.3);
    color: #10B981;
    display: block;
}

.form-message.error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #EF4444;
    display: block;
}

/* AI Chat Widget */
.ai-chat-widget {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 9999;
    font-family: 'Inter', sans-serif;
}

.ai-chat-toggle {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--ruz-gradient);
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    box-shadow: 0 4px 20px rgba(6, 182, 212, 0.4);
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.ai-chat-toggle:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 30px rgba(6, 182, 212, 0.5);
}

.ai-chat-container {
    position: absolute;
    bottom: 80px;
    right: 0;
    width: 350px;
    max-width: calc(100vw - 40px);
    height: 500px;
    background: var(--ruz-dark);
    border: 1px solid var(--ruz-border);
    border-radius: 16px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px) scale(0.95);
    transition: all 0.3s ease;
}

.ai-chat-container.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
}

.ai-chat-header {
    background: var(--ruz-gradient);
    padding: var(--space-md);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.ai-chat-title {
    color: white;
    font-weight: 600;
    font-size: 1rem;
}

.ai-chat-close {
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    transition: background 0.3s ease;
}

.ai-chat-close:hover {
    background: rgba(255, 255, 255, 0.2);
}

.ai-chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: var(--space-md);
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.ai-chat-message {
    max-width: 85%;
    padding: 0.75rem 1rem;
    border-radius: 12px;
    font-size: 0.9375rem;
    line-height: 1.5;
    animation: messageSlide 0.3s ease;
}

@keyframes messageSlide {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.ai-chat-message.user {
    align-self: flex-end;
    background: var(--ruz-gradient);
    color: white;
    border-bottom-right-radius: 4px;
}

.ai-chat-message.bot {
    align-self: flex-start;
    background: var(--ruz-card-bg);
    color: var(--ruz-text);
    border: 1px solid var(--ruz-border);
    border-bottom-left-radius: 4px;
}

.ai-chat-message.typing {
    font-style: italic;
    color: var(--ruz-text-muted);
    min-height: 40px;
    display: flex;
    align-items: center;
}

/* Typing Animation Dots */
.ai-chat-message.bot.typing {
    display: flex;
    align-items: center;
    gap: 12px;
}

.typing-dots {
    display: flex;
    gap: 4px;
    align-items: center;
    padding: 8px 4px;
}

.typing-text {
    font-size: 0.875rem;
    color: var(--ruz-gray);
    font-style: italic;
}

.typing-dots span {
    width: 8px;
    height: 8px;
    background-color: var(--ruz-primary);
    border-radius: 50%;
    animation: typing-bounce 1.4s infinite ease-in-out both;
}

.typing-dots span:nth-child(1) {
    animation-delay: -0.32s;
}

.typing-dots span:nth-child(2) {
    animation-delay: -0.16s;
}

.typing-dots span:nth-child(3) {
    animation-delay: 0s;
}

@keyframes typing-bounce {
    0%, 80%, 100% {
        transform: scale(0);
        opacity: 0.5;
    }
    40% {
        transform: scale(1);
        opacity: 1;
    }
}

/* AI Mesaj Render Stilleri */
.ai-chat-message.bot h2,
.ai-chat-message.bot h3,
.ai-chat-message.bot h4 {
    color: var(--ruz-primary);
    margin: 0.5rem 0 0.3rem 0;
    font-size: 1rem;
}

.ai-chat-message.bot h2 {
    font-size: 1.1rem;
    border-bottom: 1px solid var(--ruz-border);
    padding-bottom: 0.3rem;
}

.ai-chat-message.bot ul {
    margin: 0.5rem 0;
    padding-left: 1.2rem;
}

.ai-chat-message.bot li {
    margin: 0.3rem 0;
    color: var(--ruz-text);
}

.ai-chat-message.bot strong {
    color: var(--ruz-primary);
    font-weight: 600;
}

.ai-chat-message.bot em {
    color: var(--ruz-text-muted);
}

.ai-chat-message.bot br {
    line-height: 1.5;
}

/* Gizlilik Notu */
.ai-chat-privacy-notice {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    background: rgba(212, 175, 55, 0.1);
    border-left: 3px solid var(--ruz-gold);
    border-radius: 4px;
    margin-top: 8px;
    font-size: 12px;
    color: var(--ruz-text-muted);
}

.ai-chat-privacy-notice svg {
    flex-shrink: 0;
    color: var(--ruz-gold);
}

.ai-chat-message.system {
    background: transparent;
    padding: 0;
    margin: 8px 20px;
}

.ai-chat-input-container {
    padding: var(--space-md);
    border-top: 1px solid var(--ruz-border);
    display: flex;
    gap: 0.5rem;
}

.ai-chat-input {
    flex: 1;
    padding: 0.75rem 1rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--ruz-border);
    border-radius: 8px;
    color: var(--ruz-text);
    font-family: inherit;
    font-size: 0.9375rem;
    transition: all 0.3s ease;
}

.ai-chat-input:focus {
    outline: none;
    border-color: var(--ruz-primary);
    background: rgba(255, 255, 255, 0.08);
}

.ai-chat-send {
    width: 44px;
    height: 44px;
    border-radius: 8px;
    background: var(--ruz-gradient);
    border: none;
    color: white;
    font-size: 1.25rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.ai-chat-send:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 15px rgba(6, 182, 212, 0.3);
}

.ai-chat-send:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.ai-chat-privacy {
    padding: 0.5rem var(--space-md);
    font-size: 0.75rem;
    color: var(--ruz-text-muted);
    text-align: center;
    border-top: 1px solid var(--ruz-border);
}

/* Footer */
footer {
    background: var(--ruz-card-bg);
    border-top: 1px solid var(--ruz-border);
    padding: var(--space-xl) var(--space-sm);
    text-align: center;
}

.footer-content {
    max-width: var(--container-xl);
    margin: 0 auto;
}

.footer-text {
    color: var(--ruz-text-muted);
    margin-bottom: 0.5rem;
}

/* AI Chat Hero - Suggestions Grid */
.ai-suggestions-grid {
    grid-template-columns: repeat(2, 1fr);
}

@media (min-width: 48rem) {
    .ai-suggestions-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* AI Suggestion button hover effects */
.ai-suggestions-grid button:hover {
    background: rgba(6, 182, 212, 0.15) !important;
    border-color: rgba(6, 182, 212, 0.3) !important;
    transform: translateY(-2px);
}

/* Mobile Styles (below 768px) */
@media (max-width: 47.999rem) {
    /* Hide desktop language selector on mobile */
    .language-selector.desktop-only {
        display: none;
    }
    
    /* Mobile language selector inside menu */
    .mobile-lang-selector {
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 0.75rem;
        margin-top: 0.5rem;
        padding-top: 0.75rem;
        border-top: 1px solid rgba(255, 255, 255, 0.1);
    }
    
    .mobile-lang-selector .lang-separator {
        display: none;
    }
    
    .mobile-lang-selector .lang-label {
        color: var(--ruz-text-muted);
        font-size: 0.875rem;
        margin-right: 0.25rem;
    }
    
    .mobile-lang-selector .lang-btn {
        padding: 0.35rem 0.75rem;
        font-size: 0.875rem;
        border-radius: 4px;
        background: rgba(255, 255, 255, 0.1);
        color: var(--ruz-text-muted);
        text-decoration: none;
        transition: all 0.3s ease;
    }
    
    .mobile-lang-selector .lang-btn.active {
        background: var(--ruz-primary);
        color: white;
    }
}

/* Tablet Styles (768px and up) */
@media (min-width: 48rem) {
    /* Hide mobile language selector on desktop */
    .mobile-lang-selector {
        display: none !important;
    }
    :root {
        --space-xs: 0.75rem;
        --space-sm: 1.25rem;
        --space-md: 2rem;
        --space-lg: 2.5rem;
        --space-xl: 3.5rem;
        --space-xxl: 5rem;
    }

    .nav-toggle {
        display: none;
    }

    .nav-links {
        display: flex;
        position: static;
        flex-direction: row;
        background: none;
        border: none;
        padding: 0;
        gap: 2rem;
    }

    .nav-links a {
        padding: 0;
        text-align: left;
    }

    .hero-slider {
        height: 60vh;
        min-height: 500px;
        border-radius: 0 0 24px 24px;
    }

    .slider-arrows {
        display: flex;
        position: absolute;
        top: 50%;
        transform: translateY(-50%);
        background: rgba(255, 255, 255, 0.1);
        border: 1px solid rgba(255, 255, 255, 0.2);
        color: white;
        width: 50px;
        height: 50px;
        border-radius: 50%;
        align-items: center;
        justify-content: center;
        cursor: pointer;
        transition: all 0.3s ease;
        backdrop-filter: blur(10px);
        z-index: 3;
    }

    .slider-arrows:hover, .slider-arrows:focus {
        background: rgba(6, 182, 212, 0.3);
        border-color: var(--ruz-primary);
        transform: translateY(-50%) scale(1.1);
        outline: 2px solid var(--ruz-primary);
        outline-offset: 2px;
    }

    .prev-arrow {
        left: 2rem;
    }

    .next-arrow {
        right: 2rem;
    }

    .stats-container {
        grid-template-columns: repeat(4, 1fr);
    }

    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-xl);
    }

    .project-image {
        height: 250px;
    }

    .project-features {
        flex-direction: row;
        gap: var(--space-lg);
    }

    .tech-links {
        flex-direction: row;
        justify-content: center;
    }

    .leadership-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .leader-avatar {
        width: 120px;
        height: 120px;
        font-size: 3rem;
    }
    
    .form-submit {
        width: auto;
        padding: 1rem 3rem;
    }
}

/* Desktop Styles (1024px and up) */
@media (min-width: 64rem) {
    .hero-slider {
        height: 70vh;
        min-height: 600px;
    }

    .main-content {
        padding: 0 var(--space-lg);
    }

    .projects-grid {
        grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
    }

    .project-image {
        height: 300px;
    }

    .leadership-grid {
        grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    }
}

/* Large Desktop Styles (1400px and up) */
@media (min-width: 87.5rem) {
    .nav-container,
    .hero-container,
    .main-content,
    .footer-content {
        padding-left: var(--space-xl);
        padding-right: var(--space-xl);
    }
}

/* High DPI Display Optimization */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 2dppx) {
    .slide {
        background-image: url('./images/slide-high-res.jpg');
    }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
    /* Already optimized for dark theme */
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* Print Styles */
@media print {
    .nav-toggle,
    .slider-arrows,
    .slider-nav,
    .language-selector,
    .ai-chat-widget {
        display: none;
    }

    .hero-slider {
        height: auto;
        min-height: 200px;
    }

    body {
        background: white;
        color: black;
    }

    .section-title,
    .project-title,
    .leader-name {
        color: #333;
    }
}